168 Records of the Indian Museum. [Vou VIE; 
apex being bluntly pointed. In one skeleton, however, the right 
process is double. 
The branchial skeletion (fig. 3, p. 163) resembles that of T. 
hurum, but the distal bones of the posterior process are more 
fully ossified, the hypobranchial being followed by two distinct 
bony plates of moderate size. 
8. Trionyx cartilagineus (Boddaert). 
Boulenger, Fauna, p. 15: Siebenrock, p. 599. 
DISTRIBUTION. —Pegu, Tenasserim, Siam, Cambodia, the Malay 
Peninsula, Sumatra, Java, Borneo. This is evidently a Malayan 
species which has made its way into Lower Burma. It appears to 
be scarce in Pegu and Tenasserim but to be the common species of 
the Malay Peninsula. 
SPECIMENS :— 
BURMA. 
2632 (spirit: skull .. R.itrawaddi .. Dr. W. Theobald. 
separate): juv. 
MALAY PENINSULA. 
13207 (spirit) : juv. oe Rerak .. Dr. J. Anderson. 
Both of the above specimens are very young. Their skulls, 
which I have had removed, show the specific characters quite 
clearly. 
Genus PELOCHELYS, Gray (1864). 
Boulenger, Fauna, p. 15: Siebenrock, p. 606. 
This genus is closely allied to Chitra but may be readily dis- 
tinguished therefrom by the large and prominent orbits, which 
occupy a less anterior position on the skull. The plastron and 
carapace are very similar in the two genera. Pelochelys is another 
monotypic genus but has a much wider range, so far as we know, 
than Chitra. 
9g. Pelochelys cantorii, Gray. 
DISTRIBUTION. —The lower reaches of the Ganges, (?) Assam, 
Burma, Indo-China, Siam, the Malay Peninsula, Borneo, the 
Philippines and New Guinea. P. cantorii appears to be a scarce 
species in all the localities in which it is found. I have not seen a 
single fresh specimen, and the two old ones in our collection are 
probably immature. 
SPECIMENS :— 
BENGAL. 
1781 (skl.) .. R. Hughli,Caleutta,:. Dr:fAndersow. 
886.(33 a: Agora) , a ale ? 
